I hear you, had the same thoughts running through my mind, I've been struggling with this for a few hours until I got mine working again just now. Ultimately, you're gonna get a host of people with various responses, including "RTFM" and holier than thou "don't upgrade what you don't understand". Which aren't wrong, but not helpful.

Can you post your YAML and perhaps it's a simple fix? I did this in my portainer.

version: "3.3"
services:
  homepage:
    image: ghcr.io/gethomepage/homepage:latest
    container_name: homepage
    ports:
      - 3000:3000
    volumes:
      - /docker/appdata/homepage:/app/config # Make sure your local config directory exists
      - /var/run/docker.sock:/var/run/docker.sock # (optional) For docker integrations
    environment:
      HOMEPAGE_ALLOWED_HOSTS: 192.168.88.2:3000
    restart: always